Search
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Exterior Angle Theorem- More Knowledge!

Author:Rachel Slimovitch
Now you've formed your own observations about exterior angles. Look at the website and watch the video for more information!

Here's a website:

 Here's a website:

Here's a website:

https://www.mathsisfun.com/geometry/triangle-exterior-angle-theorem.html

Here's some practice problems.

Here's some practice problems.

Here's some practice problems.

https://www.ixl.com/math/geometry/exterior-angle-theorem

New Resources

  • z`]]
  • Fractal Tétraèdre. Dilatation -1/2 centre triangles
  • The Gardener's Ellipse
  • Rectangle Construction Template (V2)
  • Row and Column Views of Systems of Linear Equations

Discover Resources

  • Draw Circle in a Triangle_feedback
  • TR (KAY) - Μέγιστος όγκος (άσκηση)
  • Force Visualization
  • Pirates of the Pythagorean Answer

Discover Topics

  • Angles
  • Curve Sketching
  • Planes
  • Diagrams
  • Vectors 3D (Three-Dimensional)
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®